And that being said I'd follow Excalibers advise and sell them whole with your info at hand. Having to tear them down and go through them will be an extra expence to you unless the proposed buyer agrees to pay for half or all of the inspection. Then you need to get someone to look at them OR bring them to someone which could be a hassle and taking more of your time unless you can do this yourself. Either way I'd think they would still bring the same money from what I've seen in the 427 market today. But one thing is clear POSITIVE ID is needed to clarify they are sideoilers before advertising. They have all the tell tale focal points of a sideoiler. One question... do sideoilers have a threaded plug in the front of the block where the sideoiler galley was machined? I'm pretty sure they do and can't remember exactly but perhaps some here knows. Also I'd think the
oil pressure releif valve being in place and machined would be a factor also. I'd say those would be the clincher or at least give you a better idea at best. JMO, G.